The financial terms for a two-fight deal between Anthony Joshua and Tyson Fury have been agreed, says Joshua's promoter Eddie Hearn.
It is a major step towards making an historic all-British bout for the undisputed heavyweight championship of the world.
Fury holds the WBC title thanks to his stunning knockout of Deontay Wilder on February 23, but the American has activated his rematch clause.
Joshua is currently in possession of the IBF, WBA and WBO belts after winning his own rematch with Andy Ruiz Jr on December 8.
He is due to fight mandatory challenger Kubrat Pulev next, a bout that had been scheduled for Tottenham Hotspur Stadium on June 20 but was cancelled because of the coronavirus shutdown.
- Anthony Joshua to win - 6/4
- Tyson Fury to win - 1/2
- Draw - 28/1
*odds correct at 15:30 June 10
"We're making great progress," Hearn told Sky Sports News. "There is still a lot to overcome. We are looking at venues and dates. It's fair to say [Joshua and Fury] are in agreement regarding the financial terms of the fight.
"We've been talking to [Fury's management team] MTK, giving them the assurances from Joshua's side that all the details on the structure of the deal is approved from our side. And it is from Fury's side, as well.
"We're in a good place. It's fair to say that, in principle, both guys have agreed to that fight. Two fights.
"[There's] a lot to overcome in the meantime. We're moving in the right direction. I'm confident that both guys have giving their blessing for the fight to go ahead."
Hearn is planning for the first meeting to take place in the summer of 2021.
That period of time is necessary to meet the obligations to not only Wilder and Pulev but also another British fighter, and another mandatory challenger, managed by Hearn's Matchroom Boxing, Dillian Whyte.
"We have the Dillian Whyte mandatory which is due before this fight," Hearn continued.
"There is a big period of time where Whyte should get his shot at the title. That's important to us.
"The main positive news is that Joshua and Fury have agreed to a two-fight deal, in essence.
"The most difficult part of any deal is the financial element. I believe we're in a great place where both guys have agreed to what that should be.
"We have not signed contracts because there are still things to be worked out. We're pushing towards a place where they can be drafted, for 2021.
"Both guys are in agreement. The structure of the deal has been put forward, and agreed to by both parties."